Certificate verified
ISSUED · cert.v2 · GENESIS
Certificate Details
Certificate ID
253e569b-4e76-4473-ac28-6ff57d6971c8
Issuer
Certified Data LLC
Issued
April 28, 2026 at 04:41 PM UTC
Signature Algorithm
Ed25519
Signing Key ID
ed25519-prod-2025-02
Dataset / Project
Notarized Artifact — 2026-04-28
Verification Checks
Certified Artifact Hashes
ZIP artifact SHA-256 (qa.txt)
569e56697cd2957b0240bb040ec5daee5779e05c636006931f0e135dcfeacf83
Verify locally without this website:
# Linux / macOS sha256sum dataset.zip # macOS alternative shasum -a 256 dataset.zip # Windows PowerShell Get-FileHash dataset.zip -Algorithm SHA256
The output must match the artifact_hash above. Full verification guide →
Verify Your File
Verify your downloaded file
What This Certificate Proves
This certificate proves that a synthetic dataset was generated by CertifiedData and its contents match the cryptographic fingerprints recorded at issuance time.
The Ed25519 signature covers the full certificate payload including artifact hashes. Any modification to the ZIP file or inner CSV files will produce a different SHA-256 hash that will not match the certified values.
The certificate does not verify statistical quality or differential privacy unless explicitly stated in the generation metadata.
Trust Path
Registered artifact
Notarized Artifact — 2026-04-28